516 



PROCEEDINGS OF THE ACADEMY OF 



[July, 



86- Chaenogobius megacephalus sp. nov. 



Head 3; depth about 6?; D. VI-I, 11 ; A. I, 10; P. 16; V. I, 5 (I, 5) ; 



scales about 75? (squamation injured) to base of caudal; scales about 

 14? (squamation injured) in a transverse series at origin of anal; depth 

 of head about 2^ in its length; width of head 1|; snout 3^; eye 5; 

 width of mouth 2f ; maxillary 2; pectoral If; ventral 2J; third dorsal 

 spine 2^; second developed dorsal ray 2^; last 3; first developed anal 

 ray 3; last 3; caudal about U; least depth of caudal peduncle 3^; 

 interorbital space 2^ in horizontal orbital diameter. 



Body elongate, depressed anteriorly, and sides and tail well com- 

 pressed. Greatest depth apparently about belly. Caudal peduncle 

 rather long, its least depth about If in its length. 



Head large, depressed, below more or less flattened, and upper sur- 



Fig. 15. — Chwnogobius megacephalus Fowler. 



face convex. Upper profile steep and convex, or obtuse to eye, then 

 more or less shallowly convex. Snout large, broad, convexly rounded, 

 and well developed upper jaw produced. Eye rather small, high, 

 somewhat directed upward, a little longer than deep, and posterior 

 margin a little in advance of middle of length of head. Jaws rather 

 large and powerful and upper slightly protruding. Mouth large, broad, 

 and maxillary reaching a trifle past posterior margin of orbit. Lips 

 rather thin, fleshy, and with lateral margins papillose. Teeth in broad 

 bands in jaws, not connected in front, and outer ones not forming a 

 pronounced outer series, though a little larger than inner. No vomer- 

 ine or palatine teeth. Upper buccal flap broad. Tongue broad, 

 smooth, thick, truncated, with a median groove or emargination and 

 little free in front. Nostrils lateral, in front of eye, anterior a little 

 nearer front margin of eye than tip of upper jaw, and posterior close in 

 front of eye. Interorbital space narrow and flattened. 



